U.S. imports of Slate, Roughly Trimmed or Cut into Square or Rectangular Blocks or Slabs (SITC 27311) totaled $174K in August 2026, imported from 5 countries.
Importers of Slate, Roughly Trimmed or Cut into Square or Rectangular Blocks or Slabs paid $41K in duties in August 2026, an average duty rate of 23.79% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Slate, Roughly Trimmed or Cut into Square or Rectangular Blocks or Slabs imports of $174K in August 2026 ran 22% above the year-to-date monthly average of $142K.
Last updated: August 2026 dataSlate in block or slab form — whether rough-trimmed or cut by sawing into square or rectangular shapes — enters US trade primarily as a construction and architectural material valued for its natural cleavage, durability, and aesthetic finish. The heading captures material at an early processing stage: further worked, polished, or dimensioned slate products are classified under finished stone headings. Roofing slate, flooring tile blanks, and cladding slabs are the dominant commercial forms at this stage. Importers should note that the degree of surface working and dimensional precision determines whether goods remain in this heading or advance to a more finished stone classification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
20 import shipments a month
Slate that has been further worked beyond rough trimming or basic sawing — for example, by surface polishing, beveling, or cutting to non-rectangular shapes — typically advances to headings covering worked monumental or building stone. The boundary is whether the processing has added significant value beyond basic dimensional cutting, which should be evaluated against the specific HTS chapter notes.
Slate is a natural stone product and is not among the steel or aluminum articles subject to Section 232 tariffs. However, importers should verify current trade-remedy orders through CBP's ADCVD database, as antidumping or countervailing duty orders on specific stone products from particular origins can change. A licensed customs broker can confirm the current order status for the specific origin and product.
Basic heading 167 of 239 in section 2
Basic heading 27311 · $174K of $3.8B
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Imports · August 2026
origin
China and India together supply 84% of it. China pays 37.5% duty; India 10.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$174KYoY · free account
Exports
$7KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $1.5M of Slate, Roughly Trimmed or Cut into Square or Rectangular Blocks or Slabs.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.